In honor of her 70th birthday, in 1981, she donated a notable amount of money to the Finnish Cultural Foundation. With this money, they Foundation started in 1984 The Mirjam Helin International Singing Competition, organised every five years.
Her father was Oskar Walter Rokkanen, the founder of PSO. Her sister was Elbe Häkkinen, a Finnish composer and lyricist.
Mirjam Helin died on December 22, 2006 in Helsinki, Finland.